US10753435B2 - Weight and cost optimized carrier for modular hydraulic tensioner - Google Patents

Weight and cost optimized carrier for modular hydraulic tensioner Download PDF

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Publication number
US10753435B2
US10753435B2 US15/540,039 US201515540039A US10753435B2 US 10753435 B2 US10753435 B2 US 10753435B2 US 201515540039 A US201515540039 A US 201515540039A US 10753435 B2 US10753435 B2 US 10753435B2
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United States
Prior art keywords
housing
modular sleeve
fluid
piston
sleeve
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Application number
US15/540,039
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US20170363181A1 (en
Inventor
Paul Freemantle
Joseph P. Goodsell
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BorgWarner Inc
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BorgWarner Inc
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Priority to US15/540,039 priority Critical patent/US10753435B2/en
Assigned to BORGWARNER INC. reassignment BORGWARNER INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FREEMANTLE, PAUL, GOODSELL, JOSEPH P.
Publication of US20170363181A1 publication Critical patent/US20170363181A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H7/0848—Means for varying tension of belts, ropes, or chains with means for impeding reverse motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/18—Means for guiding or supporting belts, ropes, or chains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H2007/0802—Actuators for final output members
    • F16H2007/0806—Compression coil springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H2007/0802—Actuators for final output members
    • F16H2007/0812—Fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H7/0848—Means for varying tension of belts, ropes, or chains with means for impeding reverse motion
    • F16H2007/0859—Check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H2007/0876—Control or adjustment of actuators
    • F16H2007/0878—Disabling during transport

Definitions

  • the invention relates to a hydraulic chain tensioner having a piston longitudinally moveable in a housing, and more particularly to the housing of the tensioner.
  • a hydraulic tensioner for an endless loop power transmission member can include a housing, a piston moveable from a retracted position toward an extended position with respect to the housing in response to fluid pressure, and a tensioner spring biasing the piston toward the extended position with respect to the housing.
  • the hydraulic tensioner can include a modular sleeve supported by the housing and defining an aperture for slidably receiving the piston.
  • the piston and the aperture of the modular sleeve can define an expandable fluid chamber.
  • the housing can support the modular sleeve and provide a fluid passage for fluid communication between the expandable fluid chamber and a source of pressurized fluid.
  • a hydraulic tensioner for an endless loop power transmission member can include a modular sleeve having an aperture extending along a longitudinal axis, a housing for supporting the modular sleeve, a tensioner spring mounted within the modular sleeve, and a slideable piston mounted within the modular sleeve to be moveable along the longitudinal axis of the aperture.
  • the housing can have a seat in fluid communication with the aperture of the modular sleeve and defining a fluid passage allowing fluid communication with a source of pressurized fluid.
  • An end of the modular sleeve can be seated with respect to the seat of the housing to seal the fluid passage in fluid communication with the expandable fluid chamber.
  • FIG. 2 is a top view of the hydraulic tensioner of FIG. 1 ;
  • FIG. 3 is a perspective view of the hydraulic tensioner of FIG. 1 showing a seat machined in the housing engageable with the modular sleeve and a portion of the housing axially spaced from the seat and engageable with an outer periphery of the modular sleeve for retaining the modular sleeve, when the modular sleeve is seated with respect to the seat of the housing; and
  • a tensioning system for imparting tension to an endless loop power transmission member can include a hydraulic tensioner 10 .
  • the endless loop power transmission member can include a chain or a belt encircling a driving sprocket and at least one driven sprocket.
  • the hydraulic tensioner 10 can include a housing 12 supporting a hollow longitudinal sleeve 14 defining an interior aperture.
  • the interior aperture can be a cylindrical aperture.
  • a piston 16 can be slidably received within the cylindrical aperture within sleeve 14 for longitudinal movement between an extended position and a retracted position.
  • a tensioner spring 36 can bias the piston 16 toward the extended position with respect to the cylindrical aperture 14 .
  • the second end 24 of the cantilever spring 20 can be re-engaged with an outer end of the piston 16 for retaining the piston 16 within the cylindrical aperture of the housing during service situations, by way of example and not limitation, such as service situations requiring repair, replacement, or adjustment of the endless loop power transmission member.
  • the modular sleeve 14 can define a notch or window 42 located at the second end 40 with spaced side walls 42 a , 42 b .
  • the hydraulic tensioner 10 can include a snap ring 44 fixed to an outer circumference of the piston 16 and selectively engageable within one of the plurality of grooves 16 a in sequential order along the external surface of the piston 16 as the piston is driven toward the extended position.
  • the snap ring 44 can have at least one projection 50 , 52 extending radially outwardly with respect to the piston 16 and engageable within the window 42 .
  • the side walls 42 a , 42 b of the window 42 allow the outer ends 50 , 52 of the snap ring 44 to expand slightly in response to hydraulic fluid pressure within the expandable fluid chamber 18 to ratchet the piston 16 outwardly in order to maintain a predetermined pressure on the endless loop power transmission member in response to gradual elongation and wear of the endless loop power transmission member.
  • the outward piston 16 ratcheting corresponds to a reduced back pressure from the endless loop power transmission member on the piston 16 as the endless loop power transmission member gradually elongates and wears, thereby moving the snap ring 44 from one groove 16 a to another groove 16 a of the piston 16 as the piston 16 extends outwardly from the cylindrical aperture of the housing to maintain a desired predetermined pressure on the endless loop power transmission member.
  • the modular sleeve 14 includes an inner annular groove having sidewalls 14 a , 14 b for receiving the snap ring 44 and for limiting longitudinal oscillation movement of the piston 16 within the cylindrical aperture of the housing 12 in response to oscillation of the endless loop power transmission member during rotation, while back pressure from the endless loop power transmission member is substantially balanced with fluid pressure within the expandable fluid chamber 18 of the hydraulic tensioner.
  • the snap ring 44 interacts with the sidewalls 14 a , 14 b to define longitudinal end limits of oscillation of the piston while maintaining the desired predetermined pressure on the endless loop transmission member.
  • the hydraulic tensioner 10 can include a seat 25 formed in the housing 12 engageable with the modular sleeve 14 , at least one fluid passage 39 formed in the housing 12 allowing fluid communication between the source of pressurized fluid and the expandable fluid chamber 18 , and a portion 27 of the housing 12 engageable with an outer periphery of the modular sleeve 14 for retaining the modular sleeve 14 when the modular sleeve 14 is seated with respect to the seat 25 of the housing 12 .
  • the portion 27 of the housing 12 can be separate and axially spaced apart with respect to the seat 25 .
  • the housing 12 can include a supplemental support for the modular sleeve 14 including at least one concentric ring of material 27 forming part of the housing 12 and located along the longitudinal axis of the modular sleeve 14 .
  • the aperture 15 of the modular sleeve 14 can include a first end 38 and a second end 40 .
  • the first end 38 can be seated with respect to the seat 25 of the housing 12 allowing sealed fluid communication between the expandable fluid chamber 18 and the source of pressurized fluid.
  • the second end 40 can slidably receive the piston 16 and allow movement of the piston 16 in response to fluid pressure.
  • the method can further include machining the housing 12 sequentially to first define a portion of material 27 engageable with an outer periphery of the modular sleeve 14 for retaining the modular sleeve 14 when the modular sleeve 14 is seated with respect to the seat of the housing 12 , and to second define a separate, longitudinally spaced, sleeve-engaging seat 25 .
  • the method can further include forming at least one fluid passage 39 in fluid communication between the source of pressurized fluid and the expandable fluid chamber 18 through the sleeve-engaging seat 25 of the housing 12 .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
US15/540,039 2014-12-29 2015-12-14 Weight and cost optimized carrier for modular hydraulic tensioner Active 2036-10-09 US10753435B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/540,039 US10753435B2 (en) 2014-12-29 2015-12-14 Weight and cost optimized carrier for modular hydraulic tensioner

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201462097168P 2014-12-29 2014-12-29
PCT/US2015/065515 WO2016109171A1 (en) 2014-12-29 2015-12-14 Weight and cost optimized carrier for modular hydraulic tensioner
US15/540,039 US10753435B2 (en) 2014-12-29 2015-12-14 Weight and cost optimized carrier for modular hydraulic tensioner

Publications (2)

Publication Number Publication Date
US20170363181A1 US20170363181A1 (en) 2017-12-21
US10753435B2 true US10753435B2 (en) 2020-08-25

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US15/540,039 Active 2036-10-09 US10753435B2 (en) 2014-12-29 2015-12-14 Weight and cost optimized carrier for modular hydraulic tensioner

Country Status (6)

Country Link
US (1) US10753435B2 (de)
JP (1) JP6741668B2 (de)
KR (1) KR20170102891A (de)
CN (1) CN107110306B (de)
DE (1) DE112015005396T5 (de)
WO (1) WO2016109171A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11143100B2 (en) * 2017-12-22 2021-10-12 Tsubakimoto Chain Co. Tensioner

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DE102016207779B4 (de) * 2016-05-04 2022-01-05 Schaeffler Technologies AG & Co. KG Spannvorrichtung für einen Kettentrieb
JP6659454B2 (ja) * 2016-05-13 2020-03-04 Ntn株式会社 オートテンショナ
WO2019139565A1 (en) * 2018-01-10 2019-07-18 Borgwarner Inc. Retention of chain tensioner piston
CN110360280A (zh) * 2018-04-11 2019-10-22 博格华纳公司 密封液压张紧器
JP7177343B2 (ja) * 2018-10-16 2022-11-24 株式会社椿本チエイン チェーンテンショナ
EP4162174A4 (de) * 2020-06-09 2024-04-03 Antony Ashlyn Vorrichtung zur beseitigung von spiel und schwingungen in der kette eines kettenantriebs
FR3139871A1 (fr) * 2022-09-15 2024-03-22 Psa Automobiles Sa Systeme de transmission par courroie d’un mouvement rotatif genere par un moteur de vehicule automobile

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11143100B2 (en) * 2017-12-22 2021-10-12 Tsubakimoto Chain Co. Tensioner

Also Published As

Publication number Publication date
JP2017538907A (ja) 2017-12-28
CN107110306B (zh) 2021-01-12
KR20170102891A (ko) 2017-09-12
CN107110306A (zh) 2017-08-29
US20170363181A1 (en) 2017-12-21
DE112015005396T5 (de) 2017-08-24
WO2016109171A1 (en) 2016-07-07
JP6741668B2 (ja) 2020-08-19

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